/thirdparty/breakpad/processor/simple_symbol_supplier.cc
http://github.com/tomahawk-player/tomahawk · C++ · 200 lines · 135 code · 26 blank · 39 comment · 21 complexity · 28125320fb6e94d3437c65eb1ba610cf MD5 · raw file
- // Copyright (c) 2006, Google Inc.
- // All rights reserved.
- //
- // Redistribution and use in source and binary forms, with or without
- // modification, are permitted provided that the following conditions are
- // met:
- //
- // * Redistributions of source code must retain the above copyright
- // notice, this list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above
- // copyright notice, this list of conditions and the following disclaimer
- // in the documentation and/or other materials provided with the
- // distribution.
- // * Neither the name of Google Inc. nor the names of its
- // contributors may be used to endorse or promote products derived from
- // this software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- // simple_symbol_supplier.cc: A simple SymbolSupplier implementation
- //
- // See simple_symbol_supplier.h for documentation.
- //
- // Author: Mark Mentovai
- #include "processor/simple_symbol_supplier.h"
- #include <assert.h>
- #include <string.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <algorithm>
- #include <iostream>
- #include <fstream>
- #include "google_breakpad/processor/code_module.h"
- #include "google_breakpad/processor/system_info.h"
- #include "processor/logging.h"
- #include "processor/pathname_stripper.h"
- namespace google_breakpad {
- static bool file_exists(const string &file_name) {
- struct stat sb;
- return stat(file_name.c_str(), &sb) == 0;
- }
- SymbolSupplier::SymbolResult SimpleSymbolSupplier::GetSymbolFile(
- const CodeModule *module, const SystemInfo *system_info,
- string *symbol_file) {
- BPLOG_IF(ERROR, !symbol_file) << "SimpleSymbolSupplier::GetSymbolFile "
- "requires |symbol_file|";
- assert(symbol_file);
- symbol_file->clear();
- for (unsigned int path_index = 0; path_index < paths_.size(); ++path_index) {
- SymbolResult result;
- if ((result = GetSymbolFileAtPathFromRoot(module, system_info,
- paths_[path_index],
- symbol_file)) != NOT_FOUND) {
- return result;
- }
- }
- return NOT_FOUND;
- }
- SymbolSupplier::SymbolResult SimpleSymbolSupplier::GetSymbolFile(
- const CodeModule *module,
- const SystemInfo *system_info,
- string *symbol_file,
- string *symbol_data) {
- assert(symbol_data);
- symbol_data->clear();
- SymbolSupplier::SymbolResult s = GetSymbolFile(module, system_info, symbol_file);
- if (s == FOUND) {
- std::ifstream in(symbol_file->c_str());
- std::getline(in, *symbol_data, std::string::traits_type::to_char_type(
- std::string::traits_type::eof()));
- in.close();
- }
- return s;
- }
- SymbolSupplier::SymbolResult SimpleSymbolSupplier::GetCStringSymbolData(
- const CodeModule *module,
- const SystemInfo *system_info,
- string *symbol_file,
- char **symbol_data) {
- assert(symbol_data);
- string symbol_data_string;
- SymbolSupplier::SymbolResult s =
- GetSymbolFile(module, system_info, symbol_file, &symbol_data_string);
- if (s == FOUND) {
- unsigned int size = symbol_data_string.size() + 1;
- *symbol_data = new char[size];
- if (*symbol_data == NULL) {
- BPLOG(ERROR) << "Memory allocation for size " << size << " failed";
- return INTERRUPT;
- }
- memcpy(*symbol_data, symbol_data_string.c_str(), size - 1);
- (*symbol_data)[size - 1] = '\0';
- memory_buffers_.insert(make_pair(module->code_file(), *symbol_data));
- }
- return s;
- }
- void SimpleSymbolSupplier::FreeSymbolData(const CodeModule *module) {
- if (!module) {
- BPLOG(INFO) << "Cannot free symbol data buffer for NULL module";
- return;
- }
- map<string, char *>::iterator it = memory_buffers_.find(module->code_file());
- if (it == memory_buffers_.end()) {
- BPLOG(INFO) << "Cannot find symbol data buffer for module "
- << module->code_file();
- return;
- }
- delete [] it->second;
- memory_buffers_.erase(it);
- }
- SymbolSupplier::SymbolResult SimpleSymbolSupplier::GetSymbolFileAtPathFromRoot(
- const CodeModule *module, const SystemInfo *system_info,
- const string &root_path, string *symbol_file) {
- BPLOG_IF(ERROR, !symbol_file) << "SimpleSymbolSupplier::GetSymbolFileAtPath "
- "requires |symbol_file|";
- assert(symbol_file);
- symbol_file->clear();
- if (!module)
- return NOT_FOUND;
- // Start with the base path.
- string path = root_path;
- // Append the debug (pdb) file name as a directory name.
- path.append("/");
- string debug_file_name = PathnameStripper::File(module->debug_file());
- if (debug_file_name.empty()) {
- BPLOG(ERROR) << "Can't construct symbol file path without debug_file "
- "(code_file = " <<
- PathnameStripper::File(module->code_file()) << ")";
- return NOT_FOUND;
- }
- path.append(debug_file_name);
- // Append the identifier as a directory name.
- path.append("/");
- string identifier = module->debug_identifier();
- if (identifier.empty()) {
- BPLOG(ERROR) << "Can't construct symbol file path without debug_identifier "
- "(code_file = " <<
- PathnameStripper::File(module->code_file()) <<
- ", debug_file = " << debug_file_name << ")";
- return NOT_FOUND;
- }
- path.append(identifier);
- // Transform the debug file name into one ending in .sym. If the existing
- // name ends in .pdb, strip the .pdb. Otherwise, add .sym to the non-.pdb
- // name.
- path.append("/");
- string debug_file_extension;
- if (debug_file_name.size() > 4)
- debug_file_extension = debug_file_name.substr(debug_file_name.size() - 4);
- std::transform(debug_file_extension.begin(), debug_file_extension.end(),
- debug_file_extension.begin(), tolower);
- if (debug_file_extension == ".pdb") {
- path.append(debug_file_name.substr(0, debug_file_name.size() - 4));
- } else {
- path.append(debug_file_name);
- }
- path.append(".sym");
- if (!file_exists(path)) {
- BPLOG(INFO) << "No symbol file at " << path;
- return NOT_FOUND;
- }
- *symbol_file = path;
- return FOUND;
- }
- } // namespace google_breakpad